摘要
利用色集事先分配法,借助于矩阵构造具体染色及递归法的方法,研究图的点可区别全染色问题,给出了m个K4的点不交的并mK4的点可区别全色数χvt(mK4)的确切值,即"如果(k-1)4<4m≤(k)4,m≥2,k≥6,则χvt(mK4)=k".验证了VDTC猜想对mK4成立.
The problem of vertex-distinguishing total colorings of graphs was discussed via the methods of distributing color sets in advance, constructing concrete coloring with the help of matrices and recurrence method. The exact value of the vertex-distinguishing total chromatic number y. (mK.) of the. nninn inK. n mvertex-disjoint K4 was given, that is "If(k-1 4)〈4m≤(k 4),m≥2,k≥6,则Xm(mK4)=K"Thisillustrates that the VDTC conjecture is valid for mK4.
出处
《吉林大学学报(理学版)》
CAS
CSCD
北大核心
2012年第4期686-692,共7页
Journal of Jilin University:Science Edition
基金
国家自然科学基金(批准号:61163037
61163054)
宁夏自然基金(批准号:NZ1154)
宁夏大学科学研究基金(批准号:ndzr10-7)
关键词
图
点可区别全染色
点可区别全色数
graphs
vertex-distinguishing total coloring
vertex-distinguishing total chromatic number